My good friend's girlfriend brother got a call like this about 2 months ago. Except he actually thought it was microsoft. He isnt the brightest of bulbs. The person on the phone was able to convice "Jeff" to change some .ini settings and such. Needless to say my bud was over there the next day to reinstall his O.S.
Yes, it appears there really is one in every crowd
Yes, it appears there really is one in every crowd